BBC - GCSE Bitesize: Wegener’s theory
Alfred Wegener was an early 20th ..
For the next 30 years or so, scientists paid little attentionto Wegeners's theory. In the 1960's , however, geologists discoveredthat the ocean floors had been spreading, thus influencing theshapes and sizes of the continents. This new theory, called platetectonics, provided a mechanism that made sense in physical termsto account for Wegener's idea of continental drift. Although thecontinents themselves do not drift, as Wegener proposed, he wascorrect in his thesis that Earth's surface is not fixed. He wasa man well ahead of his time whose insight went beyond safe andconventional thinking. So important is Wegener to our currentunderstainding of plate tectonics that in the 1970s a crater onthe dark side of the moon was named for him, to honor his courageand wisdom.
Alfred Wegener and Plate Tectonics
Tragically, Alfred Wegener never lived to see his ideas acceptedby the scienfific community. He perished while attempting to crossGreenland from a camp on the ice cap in the winter of 1930. Hispurpose was to learn more about atmospheric conditions in theArctic in order to beter predict world weather patterns.
called Alfred Wegener's Theory of Continental Drift.
Greater understanding of theocean floor and the discoveries of features like mid-oceanic ridges, geomagnetic anomaliesparallel to the mid-oceanic ridges, and the association of island arcs and oceanictrenches occurring together and near the continental margins, suggested convection mightindeed be at work.
When German meteorologist Alfred Wegener first ..
Alfred Wegener proposed the theory of continental drift at the beginning of the 20th century. His idea was that the Earth's continents were once joined together, but gradually moved apart over millions of years. It offered an explanation of the existence of similar and rocks on continents that are far apart from each other. But it took a long time for the idea to become accepted by other scientists.
1912 the German meteorologist Alfred Wegener presented in a ..
Before Wegener developed his theory, it was thought that mountains formed because the Earth was cooling down, and in doing so contracted. This was believed to form wrinkles, or mountains, in the Earth's crust. If the idea was correct, however, mountains would be spread evenly over the Earth's surface. We know this is not the case.